“It was, needless to say, the hardest movie I’ve ever done,” Vin toldAccess Hollywood‘s Liz Hernandez at the junket for his latest movie, Guardians of the Galaxy. “I remember when the tragedy happened, my mother said to me, ‘It’s not fair that you have to mourn in front of the world.’

“What’s even harder is to mourn and simultaneously that the person is next to you, so every time you turn to whoever’s sitting in that chair you see not Paul,” he said.

“There’s only one Paul Walker. When you’ve worked with someone for 15 years and you know each other’s idiosyncrasies and you’ve created magic together for so long, it’s a strange thing to mourn that person and simultaneously pretend that person is next to you,” Vin told Entertainment Tonight.

The 47-year-old star said finishing the film with other actors filling in for his late co-star and friend was strange, but was also a touching, beautiful experience.

“It’s very, very weird,” he said. “The good thing is, because we took all the time, the movie is a true testament to everyone coming together and wanting to honor both the saga and our brother, and there’s something very beautiful about that.

“I think Fast 7 wins Best Picture, whether we want to or not!” he added.

Vin Diesels mother is so right on, as I like to think all of Mothers & Grandmothers are, when we share our years of wisdom with our grown children. I cried when I heard, such a beautiful young man with so much talent & love to give. I mourn most for his mother & daughter, this grandmother is a fan of Vin Diesel & of Pauls, may he rest in peace & may his daughter grow healthy & strong & happy, knowing many wish her only the best.